Re: [tlaplus] Why this TLA spec runs into stuttering state?

[Stephan Merz <stephan.merz@xxxxxxxxx>]

The liveness property asserts that every run of the algorithm eventually leads to a solution. Instead, you certainly want to check that a solution exists, in other words that there exists a run that leads to a solution. However, I notice that on my side, the invariant NotSolved holds (for TOTAL = 4)?

Stephan

On 29 Nov 2024, at 00:40, Anthony Lee <anthonynlee@xxxxxxxxx> wrote:

Hi all,

I have created a TLA spec to try 8 Queens problem.

It runs into stuttering state after several steps even when the Spec action has Strong Fairness setting.

Could anyone take a look and give me some hint?

Thanks.

Anthony

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<8Queens.cfg><8Queens.tla>

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